Providing AC Power
Providing DC Power
©Aqua-Hot®
400D Installation Manual
Rev 220504
©Aqua-Hot®
400D Installation Manual
Rev 220504
p. 37
p. 36
Connecting the 400D to 12V DC Power
This section will outline the requirements, steps, and
information necessary to connect the Aqua-Hot to the vehicle’s
12V DC power system. Follow all guidelines and pay attention to
all notes contained herein. Failure to adhere to these guidelines
can inhibit unit performance, and may cause damage to the
Aqua-Hot and/or the coach.
The Aqua-Hot is designed to shut down in the event that
the DC voltage level drops too low to properly operate. It is
imperative that the proper wire gauge be determined and
utilized. Reference the schematics for proper wire gauge sizing.
Please not that under full-load conditions, the Aqua-Hot can
draw as much as 20 amps of DC current.
•
Installation must be performed by a qualified, professional
according to current national regulations. Reference
A119.2/NFPA 501C Standard on Recreational Vehicles
1993 Edition for relevant national regulatory information.
• Select the correct wire gauge for installation referencing
ANSI/RVIA-LV - see Page 43.
• Protect the Aqua-Hot from over-current and shorting by
incorporating a 20A breaker (minimum) to the Aqua-Hot’s
coach-side power connection.
• The 12-volt supply to the heater must be routed directly
from the battery.
• All power circuits must be protected with fuses or automatic
circuit breakers.
• Reference the schematics starting on page 44 and Figure
72.
• The image below is simply a reference. A professional,
licensed installer needs to determine the necessary
components and configuration according to local codes
and standards.
Instructions:
1. Run and connect two wires, one red wire (+ power) and
one black wire (- ground) from the vehicle’s main battery
disconnect to the Aqua-Hot’s Reporter.
2. Label the wires indicating whether they are a power or
a ground wire.
3. Attach the DC power wires onto the appropriate
connections on the Reporter.
4. Connect both power and ground wires to the vehicle’s
battery through the vehicle’s main battery disconnect.
Figure 72
Negative/Ground
Positive/Power
In-Line
Fuse
Main Battery
Disconnect
+
-
DO NOT connect 12V DC power to the Aqua-Hot
if the vehicle requires welding. Electrical welding
will cause serious, irreversible damage to the
Aqua-Hot.
Do NOT activate the diesel burner until the antifreeze and
water heating solution has been added to the boiler tank and
the heating system has been completely bled of air. Operating
the Aqua-Hot without the heating solution will cause serious
damage to the Aqua-Hot’s boiler tank.
Figure 74
Connecting the 400D to 120V AC Power
The following section will detail how to connect the Aqua-
Hot to the vehicle’s AC electric system. Connect the 3-pin Molex
connector to the coach-side AC electric system in order to utilize
the Aqua-Hot’s AC heating element.
•
Installation must be performed by a qualified professional
according to current national regulations. Reference
A119.2/NFPA 501C Standard on Recreational Vehicles
1993 Edition.
• The boiler must be connected to a 120V AC supply
permanently and be protected with a 20A breaker
(minimum). The 120V AC must be separate from 12V DC.
• It must be possible to disconnect the power to the boiler,
either an easily accessible plug or a circuit breaker.
• Please refer to the schematic on page 46.
AC Wiring Port
Instructions:
1. Route and insert three 120V AC power source wires into
the AC terminal block through the AC wiring port’s cable
clamp fitting and into the proper terminal. Reference
Figure 74 and the schematic on page 46.
2. Secure the wires into their terminal by tightening the
corresponding screw on the terminal block to 5 inch
pounds using a slotted screw driver blade no larger than
⅛”. See Figure 73 for reference.
AC Terminal Block
Figure 73
L1
N
G
